Chemical Industry

Sunresin provides integrated resin catalyst and deacidification solutions for catalytic etherification processes. Through its advanced etherification resin catalysts and methanol recovery deacidification resins

Sunresin’s Seplite® LSC740 series is a specialty macroporous resin designed specifically for mercury removal in industrial wastewater. Its unique polymer structure and functional groups provide exceptionally strong affinity for mercury ions across a wide range of water chemistries.

Hydrogen peroxide (H₂O₂) plays a crucial role as an oxidizing agent in caprolactam production — a key raw material for synthetic fibers and engineering plastics such as nylon and polyester.

With the industry's increasing focus on efficiency, stability, and sustainability, Sunresin’s Continuous Ion Exchange system is the choice for forward-thinking producers in the 1,4-butanediol market.

The quality of brine in chlor-alkali production is crucial. Traditional primary brine purification does not meet the required standards, so secondary purification of the brine is necessary.

In concentrated hydrochloric acid, metal ions mainly exist in the form of complex anions. LSC series ion exchange resins can effectively remove iron ions and also remove other metal ions to varying degrees. Contaminated hydrochloric acid passes through a special ion exchange resin, and the exchange process capture the iron thanks to the very high selectivity. Once the LSC series ion exchange resin is saturated with iron ions, it can be regenerated with deionized water (distilled water). After regeneration, the ion exchange resin is restored to its original state and can be repeatedly used for exchange and regeneration.

Sunresin provides a mature ion exchange resin process for acetic acid purification, which can remove bromine or chloride ions in acetic acid to less than 5ppm, or undetectable levels. The fixed bed mode is recommended for the ion exchange process for acetic acid purification, which runs continuously and removes impurities through the front and back resin columns to improve the removal accuracy and ensure the maximum utilization of the resins. For details, refer to the figure below.

In the chlor-alkali industry, the use of ion-exchange membrane electrolyzers to produce sodium hydroxide has become a common practice. However, this membrane method requires that the content of calcium and magnesium ions in the brine into the tank be less than 20ppb. The old refining method can only reduce the content of calcium and magnesium ions in the brine to about 1 ppm.